The size of Kunioon is approximately 29.2 square kilometres. The population of Kunioon in 2011 was 268 people. By 2016 the population was 19 showing a population decline of 92.9% in the area during that time. The predominant age group in Kunioon is 0-9 years. Households in Kunioon are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Kunioon work in a professional occupation. In 2006, 39.9% of the homes in Kunioon were owner-occupied compared with 82.4% in 2011.